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NAVIGATIONAL TRAFFIC PHENOMENA IN NARROW STRAITS (C-1) A METHOD OF SIMULATION OF TRAFFIC FLOW IN WATERWAYS

The traffic capacity of a waterways network is important for the design of a canal system in a harbor. A program for the simulation of traffic flow is studied as the first step for the evaluation of the capacity. Since the data on the traffic in the canal system of Tokyo Harbor are compiled, the simulation is applied to the Keihin Canal and its vicinity in the system, where there are curves and a T-shaped crossing. The distributions of the ship size and speed are so determined to simulate the real ones and the time of ship arrivals is assumed to follow a random distribution. The unit time, delta T, for the simulation is determined as one tenth of the time necessary to proceed eight ship mean lengths. When no collision, stranding, nor deep violation of center line is expected in a time length of 10 delta T, each ship is moved forward by delta T times V, where V is the speed of each ship. However, when a ship is expected to collide, strand, or violate the center line, the change in direction is examined and followed. If no suitable steering is provided to avoid the danger, retardation is examined. An example of the distribution of ship traces is shown as the result of the simulation. In Japanese.

  • Corporate Authors:

    Ship Research Institute, Tokyo

    38-1, 6-chome, Shinkawa, Mitaka-shi
    Tokyo,   Japan 
  • Authors:
    • Yamada, K
    • Tanaka, K
    • Arimura, N
    • Kanamaru, S
  • Publication Date: 1971-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 17-40
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00033654
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Files: TRIS
  • Created Date: Jul 28 1973 12:00AM